NPPES file of Aug 9, 2026

Kevin Breck Westbrook, M.D.

Family Medicine Physician · Simi Valley, CA

Kevin Breck Westbrook, M.D. is a family medicine physician with a practice address in Simi Valley, California, and NPI 1508445859, issued on Apr 5, 2021. Check the license (California A196164, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1508445859
Name
Kevin Breck Westbrook
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
A196164 CA
Self-reported in NPPES; status is on the state search
Practice location
2755 Alamo St Ste 201, Simi Valley, CA 93065
Phone
(805) 988-7070
Enumerated
Apr 5, 2021
Record last updated
Oct 23, 2024
Medicare enrollment
Enrolled (PECOS I20240813000078); accepts Medicare assignment
Medical or professional school
Un Of California, Riverside, School Of Medicine, 2021
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
Download card Updates feed

8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →

Also registered at 2755 Alamo St Ste 201

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Rhea ManuelFamily Medicine Physician1891376752
  2. Rebecca RichmondFamily Nurse Practitioner1356822951

Verify Kevin Breck Westbrook in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A196164    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

81% fewer Medicare Part D claims than the average family medicine physician in 2024

677 Medicare Part D claims for 126 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.

  1. Kevin Westbrook677
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium69 claims
  2. Metformin Hcl34 claims
  3. Gabapentin26 claims
  4. Albuterol Sulfate Hfa20 claims
  5. Pantoprazole Sodium20 claims
  6. Losartan Potassium19 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $134.74

1 payment: food and beverage; the largest payer was Stryker Corporation. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Kevin Westbrook$134.74
  2. Specialty average$902.55

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Adventist Health Physicians NetworkSimi Valley, CA
  2. Simi Medical Group, IncSimi Valley, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Kevin Breck Westbrook among 17,133 family medicine physician records in California

Kevin Breck Westbrook, M.D. is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 91% of them.

  • NPI issued2021 · 91% of these records are older, 6% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 62% of these records are
  • Graduated2021 · median 2005 among the 10,652 with a school on file
  • Record last updated2024 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

60 family medicine physician records list a practice address in Simi Valley

They are 60 of the 1,397 NPPES records with a practice address in Simi Valley, and 17,133 family medicine physician records in California.

All 17,133 in California → Every provider in Simi Valley → Family Medicine Physician nationwide →

The 8 family medicine physician records with the nearest ZIP codes

  1. Ingrid Antall, MDSimi Valley, CA 930651629061700
  2. George Carbone, M.D.Simi Valley, CA 930651437124849
  3. Jerry Davidson, M.D.Simi Valley, CA 930651922073998
  4. Donald Downs, MD.Simi Valley, CA 930651568451979
  5. Harry Drummond, MDSimi Valley, CA 930651164416517
  6. Daniel Ghiyam, MDSimi Valley, CA 930651750378188
  7. Shayla Kasel, M.D.Simi Valley, CA 930651649241837
  8. Jonathan Kurohara, M.DSimi Valley, CA 930651427023407

Common questions

What is Kevin Breck Westbrook, M.D.'s NPI number?

Kevin Breck Westbrook, M.D.'s National Provider Identifier (NPI) is 1508445859, issued on Apr 5, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Kevin Breck Westbrook, M.D. located?

The NPPES record lists a practice address at 2755 Alamo St Ste 201, Simi Valley, CA, 93065. Phone: (805) 988-7070. Providers update this record themselves, so call before visiting.

How can I verify Kevin Breck Westbrook, M.D.'s license?

NPPES lists California license number A196164, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Kevin Breck Westbrook, M.D. prescribe under Medicare Part D?

In 2024, Kevin Breck Westbrook, M.D. had 677 Medicare Part D claims for 126 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.